酸盐缺乏诱导的OsGDPD5通过调节糖-auxin交叉茎来影响根生长
Lokesh Verma1, Mandavi Pandey1, Chitra Bhatia1
1National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India.
The Plant journal : for cell and molecular biology
|February 6, 2025
概括
米OsGDPD5通过影响糖和G3P水平来调节初级根生长,从而影响auxin生物合成. 淘汰OsGDPD5会缩短根,但糖或G3P的应用会恢复生长.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 甘油固醇固醇酶 (GDPDs) 是脂降解中的酶.
- 在植物中,GDPDs影响酸盐缺乏反应和根生长,但机制尚不清楚.
研究的目的:
- 研究大米GDPD5 (OsGDPD5) 在初级根生长调节中的作用.
- 阐明将OsGDPD5与根部发育联系起来的分子机制.
主要方法:
- 描述了OsGDPD5酶的活性.
- 在大米中分析了OsGDPD5基因表达模式.
- 使用CRISPR/Cas9.9生成了OsGDPD5淘汰突变体.
- 野生类型和突变植物的评估根生长,G3P,糖和auxin水平.
主要成果:
- OsGDPD5编码了一种功能性的GDPD酶,可以化特定的甘酸胆和甘酸乙醇胺.
- OsGDPD5以根尖表达,并由OsPHR2.2进行调节.
- osgdpd5突变体表现出较短的初级根,由糖或G3P恢复.
- OsGDPD5淘汰改变了内源G3P和糖水平,影响了auxin生物合成和根生长.
结论:
- OsGDPD5通过调节糖和auxin信号通路,对大米初级根生长至关重要.
- OsGDPD5将酸盐缺乏引起的脂质重塑与通过糖和激素交叉连接的根部发育联系在一起.
相关概念视频
Responses to Salt Stress
13.0K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
13.0K
Key Elements for Plant Nutrition
18.6K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.6K
Primary and Secondary Growth in Roots and Shoots
54.5K
Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
54.5K


